Warm enough for just a shorty wetsuit, and wonderfully consistent breeze on the lake today. Rigged my 8.1 and went out for a little while, to plane in the gusts. Put my phone (running MyTracks) in a waterproof case and tucked it into my PFD: Got map AND a record of speed. Proof that getting planing really does TRIPLE one's speed. (With wind that's more than just barely planable I'm sure it can quadruple one's speed or even more.)